Historical or otherwise interesting buildings in California

[ruuger]

I have another obscure search:

I'm trying to find a building

1) that's in California (preferably in or near the Sacramento area),
2) could be the location for a charity dinner or other event of that sort, and
3) has some interesting historical/architechtural detail or controversy that two know-it-alls could have an argument about :)

I tried browsing various lists of historical buildings in the US but couldn't find any that would fit my criteria.